6-Amino-1-naphthol-3-sulfonic acid (J Acid) from Germany
J Acid (6-Amino-1-naphthol-3-sulfonic acid) and its salts are specifically enumerated under HTS 2922.21.1000 as essential intermediates for direct and reactive dyes used in cellulosic fibers. The compound's ortho amino-hydroxy positioning enables stable azo coupling. Typically imported as 92-98% purity technical grade.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• HPLC chromatogram required to distinguish J Acid from isomeric naphthol acids
• pH stability testing prevents decomposition claims during ocean transit
• Confirm <0.1% heavy metals to meet REACH and TSCA impurity standards